Radiator



May 26, 1925. 1,539,362

\ G.- H. LOBER RADIATOR Filed Aug. 25. 1922 2 Sheets-Sheet 1 May 26,1925. I 1,539,362

I G. H. LOBER RADIATOR Filed Aug. 25. 1922 2 Sheets-Sheet 2 IENEIR A44Patented May 26, 1925.

UNITED STATES GEORGE H. LOBEB, or TOLEDO, OHIO.

RADIATOR.

Application filed August 25, 1922 Serial N'o. 584,175.

T 0 all whom it may concern:

Be it known that I, GEORGE H. LOBER, a citizen of'the United States, anda resident of Toledo, in the county of Lucas and State of Ohio, havemade an invention appertaining to Radiators; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it ap pertains tomake and use the same, reference being had to the accompanying drawings,and to the characters of reference marked thereon, which form a part ofthis specification.

My invention has for its object to provide a radiator for internalcombustion engines,

particularly for automobile engines, wherein the core is so constructedthat the water passageways will readily expand in case the water used asa cooling medium freezes, and will contract or return toits normalposi-' tion when the ice formed from the water melts. Thus thepassageways will be maintained normally in such a condition that theywill expand on the freezing of. the water in the radiator. Theexpansibilityof the walls of the passageways thus prevents tearing ofthe edges of the sheet material of which they are commonly formed. Theinvention also has for its object to provide in connection with such aradiator cooling means formed of metalstrips that are in contact withthe walls of the passageways and which are so constructed that thestrips forming the walls of the passageways and the cooling strips maybe readily assembled and so as to form air passageways located betweenthe cooling strips and the. walls of the water passageways, forming atthe same time the conventional honey-comb faces of the core at thejedgesof the strips. A particular advantage is theracking or stacking of thestrips in the formation of the core preparatory to the usual dipping orsoldering process in the formation of the radiator core. By my inventionthe angular corrugated walls of the passageways are readily placed inthe exact and proper position relative to each other and so as to placethe walls of each water passageway in proper position to form andmaintain, after the core is assembled, an open passageway for the water.Inasmuch as the cooling strips are so constructed as to maintain theangular corrugations of the walls of the water passageways in positionafter the core is formed,

View of a part of the core.

and while in use in the radiator, and by reason of the fact that thecore is so constructed that the water passageways may expand duringfreezing of the water in the radiator, the strips that form the core maybe made of very much thinner metal, and also of spring metal unannealed,which greatly reduces the cost of the radiator.

The invention may be used in connection with radiators of differentforms. To illustrate a practical application of the invent1on I haveshown in the drawings a core containing the invention as an example ofstructures containing the invention and shall describe it hereinafter.

Figure l of the drawings illustrates a front view of the conventionalradiator. Fig. 2 illustrates a front. view and a sectional The sectionalvie'wis that shown above the line 22. Fig. 3 is a perspective view of aracking or coolingv strip that separates the walls of the waterpassageways in the core of the radiator. Fig. 4 illustrates amodification of the structure illustrated in Fig. 2, showing aside viewof a part of the core below the line 4-4 and a sectional view of thecore above the line 44.

In Figure 2, I is the core that connects the upper and lower waterchambers of the radiator in the manner well known in the art. The coreis provided with a plurality of Water passageways that extend fromthetop of the radiator to the bottom of the radiator and connecttogether the water chambers of the radiator. In the form of constructionillustrated in Fig. 2 the water passageways 2 are formed of angularcorrugated walls, the angles 3 between the portions 4 that form thecorrugations being located substantially in parallel lines and the wallsbeing slightly spaced apart to form narrow passageways for the water.Each of the portions of the walls between the angles or corners formedare'concave, that is, they conform to parts of cylindrical surfaceshaving substantially horizontal axes extending at right angles to thefaces of the core of the radiator and located on opposite sides of thepassageway. In thus conforming to the surfaces of cylinders the metalsthat form portions of opposite sides of each passageway are locatednearer together substantially at horizontal lines extending alon thecentral parts of the portions and at right angles to the faces of thecore than at the angles. When, therefore, the radiator freezes, that is,when the when the radiator is thawed out. .principle of operation issubstantially that water expands during its freezing action, the belliedportions thus-formed readily expand outward to near the plane form asdistinct from the Cylindrical, and their elasticity causes them toimmediately return to their normal position'when the ice melts, that is,The

of the bottom of the oil can from which oil is ejected in spurts bypressure on the bottom of the oil can- The bottom being convex on theside where the pressure is exerted, the elasticity and the shape of themetal onthe bottom causes it to return immediately.

The walls of the passageways 2 are formed of narrow strips of sheetmetal and the passageway are spaced apart by offsetting edge portions ofthe strips by means of dies, in the manner. well known in the art, theedge portions being soldered during the dipping process. The strips,moreover, are formed of comparatively thin metal, and being formed ofnontempered metal, which gives the advantages described above, it isdiflicult, except by my invention, to position the strips of eachpassageway so that they will not contact somewhere along thepassageways, either in the assembling or in the use of the radiator. Bymy invention I have provided a means whereby the passageways will notonly be formed continuous, but will be maintained continuous in the useof the radiator. Also my invention enables rapid-assembly of the corepreparatory to the dipping 'of the core in order to solder all of thestrips together at one and the same time. Strips 5 are located onopposite s i des of each pair of strips that form the water passageways.The strips 5 are provided with raised portions 6 and 7 that extendoutward from opposite sides of the body portions of the strips 5. Wheneach of the strips 5 are in the position shown in Fig. 3 the portions 6extend forward and the ortions 7 extend rearward. Thus in looking at thestrips from the side shown in the figure the portions 6 are raised,while the portlons 7 are depressed.

, The raised portions, 6- and 7. are each dexfined by four slopingsurfaces 8 and-9, and a notch 10 that is located at the top or outercorner of the sloping surfaces 8 and 9. The notch 10 of each ,of theraised .portions extends across the to raised portions. Since theconsecutive corners of the corrugated strips that form" the waterpassageways are located one above the other, and since the an les arelocatedin substantially horizfc'intal hnes across the face and since theraised or outer corner. of the 1 of the core, the raised portions thatare located on opposite sides of each of the strips 5 are likewiselocated slightly above each other. When, therefore, the strips areassembled they are placed in horizontal positions and the strip 5 .islaid on to the upper of the strips that forms a water passageway,ortions on one side of the strip 5, and particularly the notches of thesaid raisedportions, are in position to engage the corners of the saidcorrugated strip that form a wall of a passageway, the

raised portions of the strip 5 will rest on the said corners and at thesame time the weight of the piled strips will force the corners intoposition in the notches 10 of the strips 5.

Thus the corners of the corrugated strips will be forced into a definiteposition relative to each other, which will properly space the portionsof the walls located between the" notches with which the ends of suchport1ons make contact.

If desired, the raised portions 6 and 7 may be so located as tomakecontact and position the consecutive corners of the strips that form thewalls of the passageways- In the construction shown, how-' .ever, I havefoundit desirable to accurately space each third corner located on oneside of each passageway. By this arrangement the strips which areelastic and consequently vary sllghtly in form, notwithstanding the factthat they may be produced from thesame die, will be accuratelypositioned throughout their length, and furthermore in use, particularlyas they change temperature, their relative positions will also bemaintained. Furthermore, in racking or stacking the strips to form thecore they may be rapidly placed and still have the notches engaging thecorners and as the strips are piled one above the other they slip intoosition in the notches so that when they are ally all clamped togetherpreparatory to dipping they'are automatically secured in properalignment to produce the desired space between the walls of thepassageway, notwithstanding their slight variation in form.

If the raised portions of the strips fidonot contact with all of thecorners the strips 5 may be cut to form the oblong openings 11 whichwill permit the air to readily pass through or distribute itselfthroughout. the parts of the radiator. The strip 5 thus forms not only aspacing strip as between the water passageways andthe corners. of

the water passageways, but also a cooling ofthe heat of the radiator.

The edges of the stripsithat form the with the notches '10so that thecorners of the corrugations of the edgesof the strips "strip. whichincreases the area of radiation 5 meet or contact with the corners ofedges of the strips that form the water passage- When the strips aresecured together by a suitable clamping device and the edges of thestrips are dipped in solder, the solder operates to seal the waterpassageways along the edges of the strips and solder the edges of thestrips that form the water passage- "ways to the edges of the strips 5at the corners where they contact with the corners of the corrugatededge portions of the strips that form the water passageways.

In the form of the device illustrated in Fig. 4 the water passageways 12may also be formed of angular corrugated strips 13 and 14 that have thesame shape as the strips that form the water passageways in the form ofconstruction illustrated in Fig. 2, and the water passageways 15 thatmay be formed of flat. parallel strips having the usual offset edgeportions, while the strips 16 maybe provided with the raised'portions 17having the notches 18 that engage certain of the corners of the strips13 and 14 and the raised portions 19 that are flat at the outer ends ofthe raised portions, and where they contact with the strips 20 and 21that form the straight water passageways 15. Thus; the raised portionsof the spacing strips 5 and 6 may be provided with notches or may be CADformed with contact surfaces that conform water passageways in the samespaced rela tion that the corners of the corrugated edge portions of thestrips that form the water passageways and the spacing strips, with theresult that the walls of the water passageways are spaced from the Wallsof adjoining water passageways not only by the corrugations of the edgeportions of the strips that form the water passageways, but also bymeans located intermediate the said edges, thus providing a compact,well sustained radiator, and yet leaving air space for the movement ofthe air through the radiator.

By the use of the spacing strips I have provided an exceedinglyefficient radiator which enables the reduction of the cost of productionand at the same time decreases the cost of upkeep of the radiator,particularly as against the effect of freezing of water in the radiator.

I claim:

1. In a radiator for internal combustion engines, water passagewaysformed of a plurality of pairs of angularly corrugated strips, theapices being located in horizontal planes, theportions' between theapices of the angles of the strips being bellied arcuately inward withrespect to the passageway and expansible outward on freezing the waterin the passageway of the radiator.

2. In a radiator for internal combustion engines, water passagewaysformed of a plucentral part of the spacing strips'being sub-' stantiallyplane and having protruding parts extending from the plane portion, thesaid protruding parts having notches fitting the apices of the angularstrips that form the water passageway.

In testimony whereof I have hereunto signed my name to thisspecification.

GEORGE H. LOBER.

